Legal claims defining the scope of protection, as filed with the USPTO.
2. The data restoration method of claim 1, further comprising querying a deduplication index table based on the backup data identifier.
3. The data restoration method of claim 2, further comprising querying the deduplication index in the deduplication index table.
4. The data restoration method of claim 3, further comprising determining a quantity of pieces of metadata corresponding to the deduplication index.
5. The data restoration method of claim 4, further comprising storing a second correspondence between the deduplication index and the quantity.
7. The backup server of claim 6, wherein the processor is further configured to query a deduplication index table based on the backup data identifier.
8. The backup server of claim 7, wherein the processor is further configured to query the deduplication index in the deduplication index table.
9. The backup server of claim 8, wherein the processor is further configured to determine a quantity of pieces of metadata corresponding to the deduplication index.
10. The backup server of claim 9, wherein the processor is further configured to store a second correspondence between the deduplication index and the quantity.
12. The data restoration method of claim 11, wherein before receiving the data restoration request, the data restoration method further comprises slicing the backup data to obtain data slices.
13. The data restoration method of claim 12, wherein before receiving the data restoration request, the data restoration method further comprises generating metadata of each of the data slices, wherein the data slices comprise the first data slice.
15. The data restoration method of claim 14, wherein before receiving the data restoration request, the data restoration method further comprises generating the first metadata.
16. The data restoration method of claim 15, wherein before receiving the data restoration request, the data restoration method further comprises storing a second correspondence between the backup data identifier and the first metadata.
18. The data restoration method of claim 17, wherein before receiving the data restoration request, the data restoration method further comprises determining that second data content of the second data slice is the same as third data content of a third data slice that is in the backup data and that is backed up in the storage device.
19. The data restoration method of claim 18, wherein before receiving the data restoration request, the data restoration method further comprises storing a second correspondence between a second deduplication index of the third data slice and third metadata of the second data slice, and wherein the third metadata describe a second distribution location of the second data slice.
20. The data restoration method of claim 19, wherein before receiving the data restoration request, the data restoration method further comprises storing a third correspondence between the backup data identifier and the first metadata, wherein the first metadata comprise the second correspondence.
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July 26, 2022
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